Ключевые слова: 2529 years, 3034 years, aid, analyze, brochure, bronchoscopy, care, caucasian ethnicity, chinese ethnicity, disease, doctor, endoscope, endoscopy, equipment, examining, expertise, glasses, healthcare and medicine, healthcare worker, holding, horizontal, hospital, indoor, man, mask, medical, medical equipment, medical instrument, medical procedure, mid adult women, multiethnic group, oncology, operating gown, operating room, patient, preparation, professional occupation, protective workwear, room, standing, surgeon, surgery, surgical cap, surgical mask, teamwork, technology, togetherness, two people, working, young men,